Improvement in lamp-collars



' n. s MERRILL.

} Lamp-Dollars. N o.149,7.74. Patented April 14, 1874.

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RUFUS s. MERRILL, or BOSTON, MASSACHUSETTS, Assrenoaor- Two- .THIRDS HISRIGHT TOW-ILLIAM BaMERRILLAND JOSHUA MERRILL,

OF SAME PLACE. I.

IMPROVEMENT lN LAM P-COLLARS.

Specification forming part of Letters Patent No.

149,774, dated April 14, 1874; application filed April 3,1874.

' lars, of which the following is a specification:

This invention relates to collars which are designed to be attached tothe necks of lampfounts, of glass or other material, for the purpose ofreceivingand holding the burner.

It is desirable to construct the collar so that it shall prevent the oilfrom spreading over the exterior of the fount, and numerous attemptshave heretofore been made in this direction.

With the above object in view, I construct the collar in a peculiarmanner, as hereinafter more particularly described, whereby there isinterposed between that part of the collar which attaches to the neck ofthe fount and that part which carries the screw-threaded seat for theburner an annular chamber, formed by said parts, open at top, andextending down into, and for the greater part contained within, theorifice or neck of the fount.

The manner in which my invention is or may be carried into effect willbe understood by reference to the accompanying drawing, in which- IFigure 1 is a vertical central section of a lamp provided With a-colla-rmade in accordance with my invention. Fig. 2 is a perspective view ofthe collar detached.

The collar is preferably of sheet metal, and struck up or spun in theusual. way into the desired shape. As shown in the drawing,'it consistsof three vertical, or substantially vertical, annular concentricpartitions or walls, A B G. The outer wall, A, and adjoining wall, B,are connected at the top, thus forming an annular receptacle, a, for theneck D of the glass lamp-fount. The middle partition or wall B and theinnermost partition or wall 0 are, on the contrary, connected at thebottom, thus forming an annular chamber, 12, which is open at the top,and is designed to catch the drip. Within and carried by the innermostwall, 0, is the screw-seat 0, into which the base of the burner is to bescrewed in the usual way.

Under this construction it will be noticed that the two partitions B G,and consequently the drip-chamber, of which they constitute the walls,are received within the body of the lamp. In this way the collar isarranged so that the burner will not be elevated above the reservoir anymore than is the case with the ordinary lamp-collar, while thedrip-chamber is within the compass of the body or neck of the lamp, andquite concealed and out of the way.

I prefer to bevel inwardly the top of the annular neck'receiver a, inorder that any oil that may drop on the same from the burner will becarried back into the drip-chamber 12, without being allowed to spreadover the exterior of the collar.

One or more holes or small tubes may be provided at the bottom of thedrip-chamber to conduct the drip back into the reservoir, if deemedadvisable.

I have described the form in which I much prefer to make the collar 5but I desire to state that the essential partof the collar is embracedin the two partitions or walls B O,

joined at their lower edges, the inner one carrying or constituting theseat for the base of the burner; for the outer wall A may be dispensedwith, in which case the wall B will, as before, fit within the neck ofthe lamp, where it can be secured by suitable means; and for thispurpose it may be struck up or provided with an ofi'set to rest on anannular ledge on the fount within the neck D 5 but, as before stated, Iprefer, and in practice shall use, the outer wall A, inasmuch as with itis formed the annular receptacle a, which will contain and conceal theneck of the fount, and the plaster or cement used to bind the collar andneck togetherl In conclusion I would say that I am well aware that dripcups or receptacles have been formed in various ways, both on thelampcollar' and on or in the body of the lamp-fount the neck of thelamp-fount to which the collar itself. I therefore make no broad claimto is applied, as shown and set forth.

such drip-receptacle; but In testimony whereof I have hereunto signedWhat I claim, and desire to secure by Letmy name this 2d day of April,A. D. 1874.

tars Patent RUFUS s MEPRILL The improved lamp-collar, made as herein Udescribed, with the two annular connected Vitnesses:

partitions or walls that form the drip-cup, EWELL DICK,

adapted to be received and contained within 1 M. BAILEY.

